Old colt print value (Dewey)

Howdy, a neewbie here. Ive got an older Colt saa print in decent shape by the artist Kenneth Francis Dewey. It has a long barrel Bisley, John Wayne,a peacemaker and a couple other things I cant remember now. its labeled the "Colt Single Action Army- Peacemaker". It is signed in pencil by the artist and labled also by him. No taers or anything, just a little discoloration from age. Any Idea of Value? Thanks!

Hmmmmm.....well......we can value the guns, but prints, paintings, drawings, etc. are a bit outside our field of expertise.

Of course, there are collectors of such things, so there's a market out there, but I'm not sure that anybody here on TFF is enough of an expert on prints or paintings of guns to give you a realistic evaluation.